Because I have pretty sensitive flu symptoms that are pretty bad, I entirely have to look after the air filter changing of my central heating, ventilation, & A/C extra special more than the usual.
I need to make sure that air filter of my central heating, ventilation, & A/C is changed at least once per month. Because if I do not do this it will happen that the air quality in my apartment will just start to deteriorate enough to where it will start setting off my flu symptoms. So if I happen to by opportunity forget to change the air filter of my central heating, ventilation, & A/C once a month, I will be reminded when I start sneezing & coughing all over the place. That is usually my easy however severe reminder that I forgot to change the air filter of my central heating, ventilation, & A/C one month & then I will go over & change the air filter to my central heating, ventilation, & A/C component at that point. But most of the time I easily do remember to change the air filter to my central heating, ventilation, & A/C for that fact alone. So it usually is never a complication or an issue. I typically am on top of it & I suppose I will typically stay on top of it until the afternoon where I can afford a whole apartment air cleaner. And then at that point the whole apartment air cleaner will take care of every single thing in the air quality & dust sensitivity part of my home!
HVAC brands